It looks like mysql is the culprit using up the memory. Is this just OneClick or SRM? Either way it looks like the issue may be a large mysql query. To check, run the following:
1. Log into the system as the user that owns the Spectrum installation
2. Open a bash shell by running "bash -login"
3. cd to the $SPECROOT/mysql/bin directory
4. Enter the following command to log into mysql:
./mysql --defaults-file=../my-spectrum.cnf -uroot -proot reporting
5. At the mysql prompt, enter the following command to see if there is a large query running:
show full processlist\G
Joe